PTFE waterproof and breathable membrane, as the name suggests: can be both waterproof and breathable, truly achieving both.
Let’s learn more about it in detail.
The material of the anti-fouling film is mainly fluoride. There are two processing methods, one is the immersion method and the other is vacuum coating. The most commonly used method is vacuum coating.
When the anti-reflective coating is completed, fluoride can be plated on the reflective coating using an evaporation process.
The anti-fouling film can cover the porous anti-reflective film layer and reduce the contact area between water and oil and the lens, making it difficult for oil and water droplets to adhere to the lens surface, so it is also called a waterproof film.
When the ptfe waterproof breathable membrane is in the state of water vapor, the water particles are very small. According to the principle of capillary movement, they can smoothly penetrate into the capillary tube to the other side, thus causing vapor permeability.
When water vapor condenses into water droplets, the particles become larger. Due to the surface tension of the water droplets (the water molecules “pull and compete” with each other), the water molecules cannot smoothly break away from the water droplets and penetrate to the other side. It prevents water penetration and makes the breathable membrane waterproof.
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